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Anuta_ua [19.1K]
3 years ago
13

A scientist is studying a new chemical he hopes will prevent insects from eating raspberry bushes. he sprays the chemical on a r

aspberry bush and places it with an unsprayed blackberry bush and some insects in a sealed room. He observes insects eating the blackberry bush, but not the raspberry bush. He concludes that the chemical works. This situation is an example of?
Biology
1 answer:
Law Incorporation [45]3 years ago
7 0
What're the choices? :)
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Which of the following structures or systems is correctly paired with its function?
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Put the following steps of bacterial specimen preparation and staining in order: a. fixation b. application of staining dyes c.
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Answer:

c. smear preparation

a. fixation

b. application of staining dyes

Explanation:

In the bacterial specimen preparation and staining order, the first step would be Smear preparation in which the smear of bacteria is formed on the slide.

Then the bacterial smear is heat-fixed so that the smear does not get washed off during the washing process in the staining procedure. After heat fixing the bacterial smear, the dyes are applied to the bacterial smear to stain the bacterial cells.  

Therefore the correct order is-

c. smear preparation

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